Lestyaninrum, I.D. et al. 2023. Effect of Soaking Time’s Variation of Red Onion (Allium Cepa L) Extracts on Formalin Content in Mackerel Tuna (Euthynnus Affinis). Jurnal Analis Medika Biosains (JAMBS). 10, 1 (Apr. 2023), 14–19. DOI:https://doi.org/10.32807/jambs.v10i1.289.